Slitting machine



3 945. w. M. STOCKER 2,367,974

SLITTING MACHINE Filed Oct. 20, 1943 5 Sheets-Sheet 1 IN VEN TOR. S

HTTOR/VE) Jan. 23, 1945. w. M. STOCKER SLI'I'TING MACHINE Filed Oct. 20, 1943 5 Sheets-Sheet 2 INVENTOR. 1% Slur/far BY W Jan. 23, 1945. w. M. STOCKER 2,357,974

' SLITTING mourns Filed Oct. 20, 1943 5 Sheets-Sheet 5 INVENTOR. William 1% 5}0t'AW SLITTING MACHINE Filed 001.. 20,, 1943 5 Sheets-Sheet 4 4g vr'zii mu m :1 I." Z

INVENfiH Mil/am AZ 52005?!" Y Jan. 23, 1945. w. M. STOCKER 2,367,974

SLITTTNG MAEIHINE Filed Obt- 205, 1943 5 Sheets-Sheet 5 Ill/1011011101111 M/ 1 at INVENTOR. fi likam Side/[er BY Patented Jan. 23, 1945 2,367,974 sm'r'rmo MACHINE? William. Ma, Stockcr,

Hollis, N. Y., assignon to CameronMachinetGompany Brooklyn, N.1Y-.', ,a. corporation) oifNew York Application October 20, 1943; SeriaI'Nm-SMZS'QZ 3- Claims.

This invention relates to slitting devices; for webs of paper or other flexible material; employing two rotatable and circular" shears that engage sidewise under spring pressure in'overlapping relation, and has more-particularly referenceto' the means for bringing the" shears into and out of sidewise engagementandinto-and out of overlapping'relation;

It is Well-known that, to prevent the edgestof the shears form overriding an'd 'therebyi becoming dulled or nicked, it' is necessary when disengaging" the shears; first to move" them out of sidewise engagement so that they, will be free to be brought out of overlapping; relation or; con versely', when engaging" the shears; to first bring them into overlapping'relation and thereafter t'o bring them into sidewise engagement;

In the prior art it has been customary to obtain this result'by either of the fol-lowing'means: One way; is to have separate instrumentalities for efiectingthe two movements; but' this presents the difficulty that the; operator may actuate the instrumentalities in the wrongorder'and'sospoil the shears, and thereforeitrhas been found necessary to provide interlocking meanstoprevent a wrong' sequence ofoperations; But; even'with suchinterlo'ckingimeans; thedis'advantagestill re"- mains that the operatorhas-te actuatetwo' irrstrumentalities and may waste" time attempting to operate theminimprope'rsequencei Another way'is to provide a singleactuating means to effect both movements, but, soarranged that before one movement is completed the" other has begun. The objection to this above mentioned second way is that differentmaterialsrequire-different amounts. of overlap of the shearsto produce efiective slitting, and. it' is thereforehighly desirable to. have means for adjusting the amount of overlap ofthe'shears. But, in the construction under discussion when the amount of overlap is. changed, the cycle of the two movements is also changed because said movements take place, to some extent, ,concurrently,, and therefore the amount of.change. innoverl'ap that canbemad'eis limited by the. necessity; of preventing; overriding ottheshearsv It isthemain object .ofthisinvention to; over come-the objectionable features. associated with the. above-describedv constructions, and to allow the overlapping-of the shears to "bealteredxwithout changing the cycle of the. two: movements and without 1 sacrificing the advantageof havin asingIeactuating means:

In the accompanying drawings; the inventicn-is (Guise-65);

Fig 3 is a'- viewin end elevatibm looking. in

Fig:- 4 is air-sectional view substantiallylon tlie plane-ofline 4k of Fige 3} showing: the=position of'the parts when the shears -ar'ein -overl'apping relation and in sidewiseen'gagement;

Fi'g. Sis aview similan'toFlg; 4, showing: the position of the par-ts after the-shears are out 0 5- sid'ewise engagement butt-while still in over?- lapping-relation;

Fig. 6 is a; sectional vi'ew substantially on' the plane of line26-6-"-of Fig. 3i showingntheeposition of the parts when the shears are-r OUU Of -OVEIG- lapping relation Fig. "I is:-asectional view: substantially 0112- the v plane ofline'll ot Fig; 4 a

Fig: 8 is a detail view: of one-off theashearsiand themeans for'ad'justlngth'e same}:

Fig. Qi's-a top view of tlie'parts showm-imlfig. 81; and

Fig; 10 is aw sectional view 'substantiallwcm the planeofline llllfl-iof -Flg. 8

H'-- and l I? indicate? twty rotataolei anfiaicircular shears'tliatl engage sidewiser in overlappingr rela. tion under' spring: pressure: to: slit! wee-material I 3. In' this instance, saidi web comes from; a source ofl supply (not.shown) zaasseswven roller I i; thence between-the; shears-i and; .thereaiter to winding mechanism: 15.- Usually; there-is? a2 number' of groups ofshears,- asiindicated llllElgSLZ and 3 shears: H" beingomountedi'on aidriverrshaft l6, and shears l2 being rotatably mountedfirrindependentholders, generallyrindicatedi aris- Hj all of"whichiholders areccarriedtiby;"azsuppontingi bar IE1 Supportinghan lsa-i'sfmountedl to have: two movements, one; an en'dwisemovementito bring shears l l and I2 into and-but O'fi sideWiSe engagement and; another; a turning movementto brim; said shears into and" out. of: overlappingrelation.

[9 is an actuating member; suclr as -a; shaft, which can be turned irr -either' direction as by meanstoi operating:handle 2'2 0; theturning movc= ment' of said shaft-being limitedby-a stop' arrrrfl l,

carried by said-*shaft, that: engageswith either-of two stops" 22 or 23- fixed on i the framework i A pivotallysupport'ed pawl ZZ and-a ratchet zfi may also be-usedd'n connection with shaft' lathewchief usefulness? of which to=-liold thershaiifiin an intermediate position;

looking-in the direc*- Means are provided whereby a throw or turning movement of shaft I9 will simultaneously actuate two reversible and simultaneously actuatable trains of elements to separately and sequentially, in two intermittent steps, move supporting bar I8 endwise to separate shears II and I2 sidewise and to thereafter turn bar I8 to bring said shears out of overlapping relation, or, conversely, to turn said bar I8 to bring said shear II and I2 into overlapping relation and to thereafter move said bar I8 endwise to bring said shears II and I2 into sidewise engagement. In the present instance, such means include two Geneva movement mechanisms, the details of which means will now be described.

Supporting bar I8 is provided with trunnions 26 at both ends (only one end being shown), the axis of said trunnions being the axis of the turning movement of said bar I8. Carried by trunnion 26 is a rotatable sleeve 21 mounted to turn independently of said supporting bar I8, but held against independent movement lengthwise thereof by being interposed between shoulder 28 and cap 29, the latter of which is secured to the end of trunnion 25 as by means of a screw 38. Sleeve 21 is provided with external screw threads 3| that interengage with internal screws threads 32 of stationary bushing 33 of the stationary'bearing 34. It will thus be seen that independent rotation of sleeve 21 acts, through the translating means just described, to produce an endwise movement of supporting bar I8 in one direction or the other, depending upon the direction of the turning movement of said sleeve 21. Two Geneva sectors are provided, one, 35, fixed to turn with supporting bar I 8 as by means of a screw 36, and, another, 31, fixed to turn with the sleeve 21 as by means of pin 38. Each of said Geneva sectors has a slot, 39 or 40, that extends radially with respect to the axis of turning of bar I8, and each of said Geneva sectors also has a bearing surface, 4| or 42. Carried by actuating shaft I9 "and moving therewith are two driving arms 43' and 44 that are in spaced relation circumferentially to one another, being 90 apart. Arm.

43 carries a roller 45 to engage in lot 40 of Geneva sector 35 on bar I 8, and arm 44 carries a roller 48 to engage in slot 39 of Geneva sector 31 on sleeve 21. Also mounted on actuating lshaft I 9, and moving therewith, are locking disks.

41 and 48 having bearing surfaces 49 and 50 com- 'plementary to bearing surfaces 4| and 42 on Geneva sectors 31 and 35, said bearing surfaces 49 and 50 having gaps 5| and 52 therein, circumferentially offset one with respect to the other to admit of swinging movement of said Geneva "sectors when the latter are moved by rollers 45 and 46.

When shears II and I2 are in sidewise engage ment and overlapping relation, the two trains of elements will occupy the position shown in Figs. 1, 2, 3 and 4. In this position, the two Geneva sectors 31 and 35 will lie in alinement one behind the other, arm 43 will be in its extreme lefthand position and its roller 45 will not be in enagement with slot 40 of Geneva sector 35; roller '46 of arm 44 will lie at the entrance of slot 39 of Geneva sector 31; and complementary bear ing surfaces 49, 50, and 4|, 42 will be in engagement so that the parts are locked in position. Also, operating handle of actuating shaft I9 will be in the position best indicated in Fig. 1, and stop arm 2| will be against stop 23. If it is now desired to separate shears II and I2 sidewise, and to bring them out of overlapping relaill ' face 42 of Geneva sector 35.

,enters slot 39 more fully and turns Geneva sector 31, such movement being permitted by gap 5| in locking disk 41, and such movement continuing until roller 48 leaves slot 39 of Geneva sector 31. The turning movement of Geneva sector 31 turns sleeve 21 of supporting bar I8 and, by the translating means previousl described, moves said bar I8 endwise, thereby bringing shears II and I2 out of sidewise engagement. The parts at this time occupy the position shown in Fig. 5. As roller 46 leaves slot 39 in Geneva sector 31, roller 45 of driving arm 43 enters slot 40 of Geneva sector 35. There is, however, a slight interval between the end of the turning movement of Geneva sector 31 and the beginning of the turning movement of Geneva sector 35, owing to the circumferential disposition of slots 39 and 40 and of driving arms 43 and 44, and the turning movements of Geneva sectors 31 and 35 take place in what is virtually two intermittent steps. The continued movement of driving arm 43 now causes roller 45 to turn Geneva sector 35, this movement being permitted by gap 52 of locking disk 48 until the position shown in Fig. 6 is reached, when said roller 45 is part-way out of slot 40. The turning movement of Geneva sector 35 turns supporting bar I8 and moves shear I2 out of overlapping relation with shear II. If

it is now desired to restore the shears to their interengagement, actuating shaft I9 is turned uninterruptedly in a counter-clockwise direction, thereby bringing stop arm 2| from stop 22 to stop 23. This action causes roller 45 to return Geneva sector 35 from the position shown in Fig. 6 to the position shown in Fig. 5, thereby bringing the shears into overlapping relation, said Geneva sector 35 being held in position by surface 50 of locking disk 48 engaging bearing sur- Thereafter, as an intermittent step, roller 48 of driving arm 44 by engagement with slot 39 moves Geneva sector 31 from the position shown in Fig. 5 to the position shown in Fig. 4, bearing surface 49 of looking disk 48 engaging bearing surface 4| of Geneva sector 31 to lock the latter in position. Turning movement of Geneva sector 31 causes a turning movement of sleeve 21 and moves supporting bar I8 endwise to engage shears II and I2 sidewise under spring pressure.

It will be noted that the endwise movement of supporting bar I8 carries both Geneva sectors 35 and 31 with it, and thus shifts the position sidewise of slots 39 and 40 slightly with respect to rollers 45 and 46, but not to such an extent as to interfere with the proper functioning of the parts.

In the present instance, the mounting for shears. I2 is as follows: As previously pointed out, each shear I 2 is carried by a separate holder generally indicated .at I1. Referring now particularly to Figs. 8, 9 and 10, 53 indicates a bracket slidably adjustable on dovetail plate 54 of supscrew 59, passing through tail stock 58 of support 56, and bearing against bracket 53. After the adjustment has been made, bolt 51 is tightened to retain support 56 in position, Spring support 56 carries a bearing 60 on which shear i2 is rotatably mounted. There can, of course, be as many shears as may be desired, as indicated in Figs. 2 and 3, and each mounting is individually adjustable on dovetail plate 54 of supporting bar l8. It will also be understood that the amount of overlap of shears H and [2 can be independently adjusted with respect to each pair of shears, by the means previously explained, and that this adjustment in no wise afiects the movements of the two trains of connections previously described.

I claim:

1. In a slitting device in which two rotatable and circular shears engage sidewise under spring pressure in overlapping relation, the combination with a supporting bar for one of said shears mounted to have tw movements, one, an endwise movement, and, the other, a turning movement, means, including two reversible and simultaneously actuatable trains of elements, to separately and sequentially, in two intermittent steps, move said bar endwise to separate the shears sidewise and to thereafter turn said bar to bring said shears out of overlapping relation or, conversely,

to turn said bar to bring said shears into overlapping relation and to thereafter move said bar endwise to bring said shears into sidewise engagement; and an actuating shaft mounted to turn with an uninterrupted movement in either direction to thereby simultaneously actuate both of said trains of elements in either direction.

2. In a slitting device in which two rotatable and circular shears engage sidewise under spring pressure in overlapping relation, the combination with a supporting bar for one of said shears mounted to have two movements, one, an endwise movement, and, the other, a turning movement; means, including two reversible and simultaneously actuatable Geneva movement mechanisms, to separately and sequentially, in two intermittent steps, move said bar endwise to separate the shears sidewise and to thereafter turn said bar to bring said shears out of overlapping relation or, conversely, to turn said bar to bring said shears into overlapping relation and to thereafter move said bar endwise to bring said shears into sidewise engagement; and an actuating shaft to simultaneously actuate both Geneva movement mechanisms in either direction.

3. In a slitting device in which two rotatable and circular shears engage sidewise under spring pressure in overlapping relation, and in which a supporting bar for one of said shears is mounted to have two movements, one, an endwise movement to bring the. shears into and out of sidewise engagement, and, the other, a turning movement to bring the shears into and out of overlapping relation, means to cause the two movements aforesaid including: in combination with said supporting bar; a rotatable sleeve mounted to turn independently on said supporting bar but held against independent movement lengthwise thereof; translating means to effect a lengthwise movement of said supporting bar in response to the independent turning movement of said sleeve; two reversible Geneva sectors, one fixed to turn with said supporting bar, and the other fixed to turn with said sleeve, said Geneva sectors having each a slot extending radially with respect to the axis of turning of said supporting bar, and having each a bearing surface; an actuating shaft; two driving arms, in spaced relation circumferentially to one another, mounted to move with said actuating shaft; two rollers, one on each arm, one to engage the slot of one Geneva sector and the other to engage the slot of the other Geneva sector; and two locking disks, also mounted to move with said actuating shaft, having bearing surfaces complementary to, and engageable with, those of the Geneva sectors, and having gaps in said bearing surfaces circumferentially offset one with respect to the other to admit of swinging movements of said Geneva sectors when moved by said rollers.

WILLIAM M. STOCKER. 

